<template>
  <div class="login-container">
    <!-- elementui的form表单组件规则要生效有四个前提
      1. el-form必须绑定 :model="表单关联的对象"
      2. el-from必须绑定 :rules 规则 对应的是一个对象,对象中每一个对应的规则是数组
      3. 表单el-input所在的  el-form-item必须加 prop属性 值是校验规则对应的字段
      4. el-input 必须 绑定 v-model属性 值是loginForm对应的字段
      auto-complete="off"  自定补全  on是开启 off是关闭
     -->
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="off" label-position="left">
      <div class="title-container">
        <!-- 修改网站头部logo -->
        <h3 class="title">
          <img src="@/assets/common/login-logo.png" alt="">
        </h3>
      </div>

      <el-form-item prop="mobile">
        <span class="svg-container">
          <svg-icon icon-class="wechat" />
        </span>
        <el-input
          ref="mobile"
          v-model="loginForm.mobile"
          placeholder="请输入手机号"
          name="mobile"
          type="text"
          tabindex="1"
          auto-complete="off"
        />
      </el-form-item>
      <!-- 密码表单项 -->
      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="money" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="请输入密码"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>
      <!-- native 有些组件 并没有对事件进行支持, 可以使用.nactive修饰符将事件绑定给组件的根节点
        如果我们在使用组件库的时候绑定事件绑定不上 需要加.natvie修饰符
      -->
      <el-button
        :loading="loading"
        type="primary"
        style="width:100%;margin-bottom:30px;"
        class="loginBtn"
        @click.native.prevent="handleLogin"
      >登录</el-button>

      <div class="tips">
        <span style="margin-right:20px;">账号: 13800000002</span>
        <span> 密码: 123456</span>
        <!-- {{ $store.state.user.tokenInfo.token }}
        <hr>
        {{ $store.getters.token }} -->
      </div>
    </el-form>
  </div>
</template>

<script>
import { validMobile } from '@/utils/validate'

import { mapMutations } from 'vuex'
export default {
  name: 'Login',
  data() {
    // 自定义手机号校验规则
    const checkMobile = (rule, value, callback) => {
      // console.log(value) // 输入框的值  callback()表示校验通过   callback(new Error('msg')) -失败
      if (!validMobile(value)) {
        callback(new Error('手机号格式不合法'))
      } else {
        callback()
      }
    }
    return {
      // 表单关联的对象
      loginForm: {
        mobile: '13800000002',
        password: '123456'
      },
      loginRules: {
        // username: [{ required: true, trigger: 'blur', validator: validateUsername }],
        mobile: [
          { required: true, trigger: ['blur', 'change'], message: '手机号不能为空' },
          // { min: 11, max: 11, trigger: ['blur', 'change'], message: '长度不合法' }
          // 自定义手机号校验规则 validator
          { validator: checkMobile, trigger: ['blur', 'change'] }
          // { pattern: /^1[3-9]\d{9}$/, trigger: ['blur', 'change'], message: '手机格式不正确' }
        ],
        // 密码的校验规则
        password: [
          // 空值校验
          { required: true, message: '密码不能为空', trigger: ['blur', 'change'] },
          // 长度合法校验
          { min: 6, max: 16, message: '密码长度在6-16位之间', trigger: ['blur', 'change'] }
        ]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    // ...mapMutations('模块名',['mutation名']),
    ...mapMutations('user', ['setToken']),
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      // validate 是 form表单组件的预校验的函数 参数返回一个布尔值 如果校验都通过是true,有一项不通过就是false
      this.$refs.loginForm.validate(async valid => {
        if (valid) { // 所有表单都通过校验才去发送请求
          // 1. 禁用按钮
          this.loading = true
          // 2.action 发请求  + token存储
          this.$store.dispatch('user/login', this.loginForm)
            .then(res => {
              // 4. 跳转到首页
              this.$router.push('/')
            }).catch(() => {}).finally(() => {
              // 不论成功还是失败,都会进入finally 相当于$.ajax中的的complete
              // 3. 将loading关闭
              this.loading = false
            })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  }
}
// $.ajax({
//  url: ,
//  type:'',
//  success(){}, 成功
//  error(){}, 失败
//  complete  结束  不论成功还是失败都会执行这个函数
// })
</script>
<style lang="scss">
// 覆盖样式在 这个 style标签中
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg:#283443;
$light_gray:blue;
$cursor: red;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }
  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
  // 错误的提示文本颜色
  .el-form-item__error {
    color: #fff !important;
    font-size: 14px;
 }
}
</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray: #407ffe;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;
  background-image: url('~@/assets/common/login.jpg'); // 设置背景图片
  background-position: center; // 将图片位置设置为充满整个屏幕
  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
  // 设置表单项为白色
  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.9); // 输入登录表单的背景色
    border-radius: 5px;
    color: #454545;
  }
}
 .loginBtn {
  background: #407ffe;
  height: 64px;
  line-height: 32px;
  font-size: 24px;
}
</style>
